80104040

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9491}}^1$

素因数の和:9713

約数の個数: 32

約数和(自身を含む): 181107360

約数和(自身を除く): 101003320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 9491, 18982, 37964, 47455, 75928, 94910, 189820, 379640, 2002601, 4005202, 8010404, 10013005, 16020808, 20026010, 40052020, 80104040]

約数ペア:

[(1, 80104040), (2, 40052020), (4, 20026010), (5, 16020808), (8, 10013005), (10, 8010404), (20, 4005202), (40, 2002601), (211, 379640), (422, 189820), (844, 94910), (1055, 75928), (1688, 47455), (2110, 37964), (4220, 18982), (8440, 9491)]